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Finding the Fourth Proportional to 121,373.89, 181,594.28 and 73,980.39

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Solution

The fourth proportional to 121,373.89, 181,594.28 and 73,980.39 is: 110,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,373.89 : 181,594.28 = 73,980.39 : x
  2. Step 2: Convert to fraction form
    121,373.89/181,594.28 = 73,980.39/x
  3. Step 3: Cross multiply
    121,373.89x = 181,594.28 × 73,980.39
  4. Step 4: Simplify right side
    121,373.89x = 13,434,414,378.30
  5. Step 5: Solve for x
    x = 13,434,414,378.30/121,373.89
  6. Step 6: Final answer
    x = 110,686.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.